Janey & Linda
Can't really argue with your comments, especially with English run bars, where you can pay 3 Euros a glass for paint stripper. Many of the Spanish owned bars don't do much better but prices tend to be much cheaper. Two notable exceptions, Bar Plaza in Santiago and Tasca Llano in Alcala, both serve good quality wines for 2 Euros a glass.
When you can buy perfectly acceptable Red (or white) Wines for under 4 Euros a bottle its difficult to understand why people serve cra*, but then again if you don't like it complain and don't go back.